Wind board



y 1943. o. M. BARBER 2,324,754

' WIND BOARD Filed June 20, 1941 J 2 Sheets-Sheet J Inbentm' B; @Mm

A tmrney V July 1943- o. M. BARBER 2,324,754

WIND BOARD Filed Jun 20, 1941 2 sheets-sheet 2 (I u a Y I/"2 I C: P

I I -y '1 I 4 'I l .1 I I I 2 0) I :I I I l 1, 2 a a J L I III InventorAttorney Patented July 20, 1943 omen STATES essen-T Oliver M. Barber,Visalia, Calif.

Application June 20, 1941, Serial No. 399,018

1 Claim.

The present invention relates to new and useful improvements in windboards for combines, threshers and other separating machines and has forits primary object to provide, in a manner as hereinafter set forth, adevice of this character which is adapted to concentrate most of the airblast from the undershot fan over a comparatively restricted area on thefront end portion of the screen, the rest of the air being per mitted topass under the board and to strike the screen from an intermediate pointrearwardly.

Another very important object of the invention is to provide a windboard of the aforementioned character which is adapted to beexpeditiously adjusted as desired from one side of the combine, thresheror other separating machine.

Other objects of the invention are to provide a wind board of thecharacter described which will be comparatively simple in construction,strong, durable, highly efficient and reliable in use, compact and whichmay be manufactured and installed at low cost.

All of the foregoing and still further objects and advantages of theinvention will become apparent from a study of the followingspecification taken in connection with the accompanying drawings whereinlike characters of reference designate corresponding parts throughoutthe several views, and wherein:

Figure l is a view in vertical longitudinal section through a portion ofa combine, showing a wind board constructed in accordance with the thisportion of the combine, showing the wind board constituting the presentinvention in top plan.

Figure 3 device.

Figure 4 is a detail view in cross-section, taken substantially on theline 44 of Figure 3.

Figure 5 is a detail View in perspective of the shaft. 7

Referring now to the drawings in detail, it will be seen that referencenumeral I designates the front portion of the usual screen or sieve of acombine. Located forwardly and downwardly of the vibrating screen I is aconventional fan or blower 2. Of course, the fan 2 is adapted to blowair rearwardly and upwardly through the screen I.

The embodiment of the present invention which has been illustratedcomprises a metallic shaft 3 having its end portions journaled inopenings which are provided therefor in the side walls 4 of is a View infront elevation of the the machine. It will be noted that the shaft 3 ismounted rearwardly of but adjacent to the fan 2. Rigidly secured bybolts 5 on one side of the shaft 3 is a board 6 of suitable metal orother material. Both longitudinal edges of the board 6 are spaced fromthe shaft 3. Also, the end portions of the shaft 3 project beyond theends of the board 6. This is shown to advantage in Figure 3 of thedrawings.

The shaft 3 includes a threaded end portion 1 which projects beyond theadjacent side wall 4 of the combine or other machine. Mounted on thisend portion I of the shaft 3 is a washer 8 for engagement with theadjacent side wall 4. Then, a nut 9 is threaded on the end portion 1 ofthe shaft for securing said shaft in adjusted position against rotation.When the nut 9 is tightened the adjacent side wall 4 of the machine isclamped between the washer 8 and the adjacent end of the board 6. Thus,the device is frictionally secured in adjusted position. After the nut 9has been tightened a lock nut 10 is threaded on the end portion 1 of theshaft 3. The threaded nd portion '1 of the shaft 3 is provided with flatopposite side portions II for receiving a wrench or other tool forrotatably adjusting the shaft 3 and the board 6 thereon.

In operation, the shaft 3 is rotated by applying a wrench or other toolto the end portion 1 thereof for adjusting the board 6 to the desiredinclination. The construction and arrangement is such that most of theair blast from the fan 2 may be concentrated on the front end portion ofthe vibrating screen I. The area thus subjected to most of the air blastmay be regulated as de sired by adjusting the inclination of the board6. The rest of the air passes under the board 6 and strikes the screen Iapproximately between the intermediate portion and rear end thereof.Thus, most of the air blast is played on the from; portion of the screenwhere the load is heaviest with the result that a large percentag of thestraw and the chaff will be separated and blown to the tail end of themachine before it can reach the screen I. In this manner the screen I iskept comparatively clear at all times for maximum operating efficiency.

It is believed that the many advantages of a wind board constructed inaccordance with the present invention will be readily understood andalthough a preferred embodiment of the device is as illustrated anddescribed, it is to be understood that changes in the details ofconstruction and in the combination and arrangement of parts may beresorted to which will fall within the scope of the invention asclaimed.

What is claimed is:

A Wind board comprising, a shaft journaled for rotary adjustment in twoopposed Walls of a grain separating machine, a board fixed on the shaft,said shaft including a threaded end portion projecting outwardly fromone of said walls and having fiat opposite side portions, a washer onthe shaft engageable with said one wall, a nut threaded on said threadedend portion of the shaft

